One vertex per element, one color per generator, with an edge from x to x·s.
(1,2,6,8,5,9,4,13)(3,7,11,16,12,10,14,15)(17,18,22,26,23,20,30,27)(19,21,25,31,29,32,28,24)(1,2,4,13,5,9,6,8)(3,10,14,16,12,7,11,15)(17,19,23,29)(18,24,20,31)(21,26,32,27)(22,28,30,25)(1,3)(2,7)(4,14)(5,12)(6,11)(8,16)(9,10)(13,15)(17,20)(18,23)(19,24)(21,25)(22,27)(26,30)(28,32)(29,31) involution — undirected(1,4,5,6)(2,8,9,13)(3,11,12,14)(7,15,10,16)(17,21,22,31,23,32,30,24)(18,25,26,29,20,28,27,19)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.